Year % 1996 65.53 1997 65.53 1998 65.53 2000 66.17 2001 66.17 2003 65.51 2006 65.51 2008 65.83 2009 65.83 2010 65.83 2011 65.83 2012 65.83 2013 65.83 2014 68.69 2015 68.69 2016 68.69 2019 68.77 2020 68.77 2021 68.77